EP1249933A3 - Dispositif à ondes accoustiques de surface - Google Patents

Dispositif à ondes accoustiques de surface Download PDF

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Publication number
EP1249933A3
EP1249933A3 EP02290698A EP02290698A EP1249933A3 EP 1249933 A3 EP1249933 A3 EP 1249933A3 EP 02290698 A EP02290698 A EP 02290698A EP 02290698 A EP02290698 A EP 02290698A EP 1249933 A3 EP1249933 A3 EP 1249933A3
Authority
EP
European Patent Office
Prior art keywords
acoustic wave
surface acoustic
wave filter
filter device
idts
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP02290698A
Other languages
German (de)
English (en)
Other versions
EP1249933A2 (fr
EP1249933B1 (fr
Inventor
Sawada c/o Yoichi (A170) I. P. Department
Takamine c/o Yuichi (A170) I. P. Department
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Murata Manufacturing Co Ltd
Original Assignee
Murata Manufacturing Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Murata Manufacturing Co Ltd filed Critical Murata Manufacturing Co Ltd
Publication of EP1249933A2 publication Critical patent/EP1249933A2/fr
Publication of EP1249933A3 publication Critical patent/EP1249933A3/fr
Application granted granted Critical
Publication of EP1249933B1 publication Critical patent/EP1249933B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic elements; Electromechanical resonators
    • H03H9/46—Filters
    • H03H9/64—Filters using surface acoustic waves
    • H03H9/6423—Means for obtaining a particular transfer characteristic
    • H03H9/6433—Coupled resonator filters
    • H03H9/6436—Coupled resonator filters having one acoustic track only
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic elements; Electromechanical resonators
    • H03H9/46—Filters
    • H03H9/64—Filters using surface acoustic waves
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic elements; Electromechanical resonators
    • H03H9/0023—Networks for transforming balanced signals into unbalanced signals and vice versa, e.g. baluns, or networks having balanced input and output
    • H03H9/0028—Networks for transforming balanced signals into unbalanced signals and vice versa, e.g. baluns, or networks having balanced input and output using surface acoustic wave devices
    • H03H9/0047—Networks for transforming balanced signals into unbalanced signals and vice versa, e.g. baluns, or networks having balanced input and output using surface acoustic wave devices having two acoustic tracks
    • H03H9/0066—Networks for transforming balanced signals into unbalanced signals and vice versa, e.g. baluns, or networks having balanced input and output using surface acoustic wave devices having two acoustic tracks being electrically parallel
    • H03H9/0071—Networks for transforming balanced signals into unbalanced signals and vice versa, e.g. baluns, or networks having balanced input and output using surface acoustic wave devices having two acoustic tracks being electrically parallel the balanced terminals being on the same side of the tracks
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic elements; Electromechanical resonators
    • H03H9/0023—Networks for transforming balanced signals into unbalanced signals and vice versa, e.g. baluns, or networks having balanced input and output
    • H03H9/0028—Networks for transforming balanced signals into unbalanced signals and vice versa, e.g. baluns, or networks having balanced input and output using surface acoustic wave devices
    • H03H9/0085—Networks for transforming balanced signals into unbalanced signals and vice versa, e.g. baluns, or networks having balanced input and output using surface acoustic wave devices having four acoustic tracks
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic elements; Electromechanical resonators
    • H03H9/02—Details
    • H03H9/125—Driving means, e.g. electrodes, coils
    • H03H9/145—Driving means, e.g. electrodes, coils for networks using surface acoustic waves
    • H03H9/14544—Transducers of particular shape or position
    • H03H9/14576—Transducers whereby only the last fingers have different characteristics with respect to the other fingers, e.g. different shape, thickness or material, split finger
    • H03H9/14582—Transducers whereby only the last fingers have different characteristics with respect to the other fingers, e.g. different shape, thickness or material, split finger the last fingers having a different pitch

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
EP02290698A 2001-03-23 2002-03-20 Dispositif à ondes accoustiques de surface Expired - Lifetime EP1249933B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2001085138 2001-03-23
JP2001085138A JP3534080B2 (ja) 2001-03-23 2001-03-23 弾性表面波フィルタ装置

Publications (3)

Publication Number Publication Date
EP1249933A2 EP1249933A2 (fr) 2002-10-16
EP1249933A3 true EP1249933A3 (fr) 2010-02-03
EP1249933B1 EP1249933B1 (fr) 2012-07-04

Family

ID=18940700

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02290698A Expired - Lifetime EP1249933B1 (fr) 2001-03-23 2002-03-20 Dispositif à ondes accoustiques de surface

Country Status (5)

Country Link
US (1) US6731188B2 (fr)
EP (1) EP1249933B1 (fr)
JP (1) JP3534080B2 (fr)
KR (1) KR100435167B1 (fr)
CN (1) CN1171384C (fr)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3509771B2 (ja) * 2001-04-18 2004-03-22 株式会社村田製作所 弾性表面波フィルタ装置、通信装置
JP3820954B2 (ja) * 2001-10-12 2006-09-13 株式会社村田製作所 弾性表面波装置、通信装置
JP3826877B2 (ja) * 2002-01-22 2006-09-27 株式会社村田製作所 弾性表面波装置およびそれを有する通信装置
JP4062154B2 (ja) * 2002-05-16 2008-03-19 株式会社村田製作所 弾性表面波装置および通信装置
JP4273935B2 (ja) * 2003-01-24 2009-06-03 株式会社村田製作所 弾性表面波装置、通信装置
JP4100249B2 (ja) * 2003-05-19 2008-06-11 株式会社村田製作所 弾性表面波装置、通信機
JP2006222562A (ja) * 2005-02-08 2006-08-24 Sony Corp 微小共振器、バンドパスフィルタ、半導体装置、及び通信装置
JPWO2006087875A1 (ja) 2005-02-16 2008-07-03 株式会社村田製作所 バランス型弾性波フィルタ装置
KR100898703B1 (ko) * 2005-07-13 2009-05-20 가부시키가이샤 무라타 세이사쿠쇼 탄성파 필터장치
JP4735717B2 (ja) * 2006-06-21 2011-07-27 株式会社村田製作所 弾性波フィルタ装置及びデュプレクサ
JP2008035007A (ja) * 2006-07-27 2008-02-14 Fujitsu Media Device Kk フィルタ
EP2091146B1 (fr) * 2006-11-08 2015-07-22 Skyworks Panasonic Filter Solutions Japan Co., Ltd. Résonateur d'onde acoustique de surface
US8476991B2 (en) 2007-11-06 2013-07-02 Panasonic Corporation Elastic wave resonator, elastic wave filter, and antenna sharing device using the same
JP4569713B2 (ja) * 2007-11-06 2010-10-27 パナソニック株式会社 弾性波共振器、弾性波フィルタおよびこれを用いたアンテナ共用器
WO2009113274A1 (fr) * 2008-03-14 2009-09-17 パナソニック株式会社 Filtre à onde élastique, duplexeur et dispositif électronique qui utilise celui-ci
CN102197593B (zh) * 2008-11-25 2014-10-08 株式会社村田制作所 弹性波滤波装置
JP5281489B2 (ja) 2009-06-09 2013-09-04 太陽誘電株式会社 弾性表面波デバイス
DE102009032840B4 (de) 2009-07-13 2015-02-05 Epcos Ag SAW-Filterschaltung mit verbesserter ESD-Festigkeit
JP5418091B2 (ja) * 2009-09-11 2014-02-19 パナソニック株式会社 弾性波フィルタ装置及びこれを用いたデュプレクサ及び電子機器
US9425766B2 (en) * 2009-11-02 2016-08-23 Skyworks Panasonic Filter Solutions Japan Co., Ltd. Elastic wave element, and electrical apparatus and duplexer using same
DE102010046794B4 (de) 2010-09-28 2015-07-16 Epcos Ag Mit akustischen Wellen arbeitendes Filter mit verringerten Nichtlinearitäten
CN205992889U (zh) * 2014-03-31 2017-03-01 株式会社村田制作所 声表面波滤波器
CN116707486B (zh) * 2022-02-28 2025-01-14 锐石创芯(重庆)微电子有限公司 一种滤波器、多工器和射频前端

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0600705A1 (fr) * 1992-12-01 1994-06-08 Japan Radio Co., Ltd Filtre à ondes acoustique de surface et système de communication mobile utilisant ce filtre
EP0836278A2 (fr) * 1996-10-09 1998-04-15 Murata Manufacturing Co., Ltd. Dispositif de filtrage à ondes élastiques de surface
EP0845858A2 (fr) * 1996-11-28 1998-06-03 Fujitsu Limited Dispositif à ondes acoustiques de surface
DE19753664A1 (de) * 1996-12-25 1998-07-02 Murata Manufacturing Co Oberflächenwellen-Resonatorfilter
JPH11145772A (ja) * 1997-11-05 1999-05-28 Tdk Corp 弾性表面波装置
WO2000069069A1 (fr) * 1999-05-10 2000-11-16 Research In Motion Ltd. Filtre differentiel a ondes acoustiques de surface pourvu de sorties symetriques
EP1126605A2 (fr) * 2000-02-14 2001-08-22 Murata Manufacturing Co., Ltd. Dispositif de filtrage à ondes acoustiques de surface
EP1158672A2 (fr) * 2000-05-22 2001-11-28 Murata Manufacturing Co., Ltd. Filtre à ondes acoustiques de surface du type à résonateur couplé transversalement
EP1168613A2 (fr) * 2000-06-26 2002-01-02 Murata Manufacturing Co., Ltd. Filtre à ondes acoustiques de surface du type à résonateur couplé transversalement et dispositif de communication comportant le même

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0782255B1 (fr) * 1995-12-28 2002-03-27 Murata Manufacturing Co., Ltd. Filtre résonateur à ondes acoustiques de surface à couplage longitudinal
JP3239064B2 (ja) * 1996-05-28 2001-12-17 富士通株式会社 弾性表面波装置
JP3607833B2 (ja) * 1999-05-28 2005-01-05 沖電気工業株式会社 差動弾性表面波フィルタ
JP2001267885A (ja) * 2000-03-17 2001-09-28 Fujitsu Media Device Kk 弾性表面波装置
JP3454239B2 (ja) * 2000-08-31 2003-10-06 株式会社村田製作所 弾性表面波フィルタ
JP2002359541A (ja) 2000-10-27 2002-12-13 Toyo Commun Equip Co Ltd 共振子型弾性表面波フィルタ

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0600705A1 (fr) * 1992-12-01 1994-06-08 Japan Radio Co., Ltd Filtre à ondes acoustique de surface et système de communication mobile utilisant ce filtre
EP0836278A2 (fr) * 1996-10-09 1998-04-15 Murata Manufacturing Co., Ltd. Dispositif de filtrage à ondes élastiques de surface
EP0845858A2 (fr) * 1996-11-28 1998-06-03 Fujitsu Limited Dispositif à ondes acoustiques de surface
DE19753664A1 (de) * 1996-12-25 1998-07-02 Murata Manufacturing Co Oberflächenwellen-Resonatorfilter
JPH11145772A (ja) * 1997-11-05 1999-05-28 Tdk Corp 弾性表面波装置
WO2000069069A1 (fr) * 1999-05-10 2000-11-16 Research In Motion Ltd. Filtre differentiel a ondes acoustiques de surface pourvu de sorties symetriques
EP1126605A2 (fr) * 2000-02-14 2001-08-22 Murata Manufacturing Co., Ltd. Dispositif de filtrage à ondes acoustiques de surface
EP1158672A2 (fr) * 2000-05-22 2001-11-28 Murata Manufacturing Co., Ltd. Filtre à ondes acoustiques de surface du type à résonateur couplé transversalement
EP1168613A2 (fr) * 2000-06-26 2002-01-02 Murata Manufacturing Co., Ltd. Filtre à ondes acoustiques de surface du type à résonateur couplé transversalement et dispositif de communication comportant le même

Also Published As

Publication number Publication date
US6731188B2 (en) 2004-05-04
EP1249933A2 (fr) 2002-10-16
CN1171384C (zh) 2004-10-13
US20020163403A1 (en) 2002-11-07
JP2002290205A (ja) 2002-10-04
KR100435167B1 (ko) 2004-06-09
EP1249933B1 (fr) 2012-07-04
CN1377135A (zh) 2002-10-30
KR20020075306A (ko) 2002-10-04
JP3534080B2 (ja) 2004-06-07

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